Counter-Strike

At the B bomb (Counter Terrorist spawn), there is a way to get on the roof. You will need two people to do this. When you start, turn around and go to the bombed out "house". Jump on the bit of the house where you can, then jump up to the next part. If you need a running jump, you should use it but it is not necessary. You can now jump onto the tank. Run to the end and jump onto the boxes. Get one person to crouch down on the boxes and jump on his head. You can then jump onto the roof. When the Terrorists arrive to plant the bomb, you can take them out. To benefit the Terrorists, you can stop the Counter Terrorists from defusing the bombs.

Enter PlumRugOfDoom as a case-sensitive profile name. The terrorists at Prodigy will now have purple streaked hair.

After you choose a level and you are about to choose betwenn terrorist and couner-terrorist, wait for about 2 minutes and a voice-over will say something.

When you are about to do a big fall, equip your shield's secondary function, look straight down, and jump. You will take no damage.

Press START and tap the D-Pad for:

Low Gravity - UP, RIGHT, RIGHT, UP, UP, LEFT
No Target Mode - LEFT, RIGHT, RIGHT, LEFT, UP, DOWN
IFF Glow - RIGHT, RIGHT, RIGHT, UP, DOWN, LEFT
Big Heads - UP, UP, LEFT, RIGHT, UP, DOWN
Player clipping - UP, DOWN, LEFT, RIGHT, DOWN, UP
Autoaim Toggle - DOWN, DOWN, DOWN, DOWN, UP, UP
Add 16,000 Credits - UP, UP, DOWN, DOWN, LEFT, RIGHT
Outfit Change - LEFT, RIGHT, DOWN, UP, LEFT, RIGHT

Note: These codes only work for single player games.